Lawn watering time and volume, and rainwater you can collect from your roof.
Gallons and sprinkler run time to apply your target amount of water each week.
Open calculatorHow much rain your roof can shed into barrels or tanks for a given rainfall.
Open calculatorWater advice is given in inches, but sprinklers run in minutes and barrels hold gallons. These calculators connect the two using your own measurements, such as the output you measure with a simple catch-cup test.
Use the Lawn Watering Calculator to plan run times and the Rainwater Collection Calculator to size barrels or tanks.